superdiversity and diverse national origins

The UK census has just produced some figures - and the major cities are indeed multi-ethnic and mult-cultural:

Why Nigel Farage is wrong about London being 'minority white' - BBC News

And this means that it's also multilingual, as reported recently in the Guardian:

In modern Britain, millions of kids grow up learning two languages or more – and experts believe fluidity in language has some surprising advantages 

For many three-year-olds growing up in the UK, it’s challenging enough to learn and master one language, usually English. Yet there’s another rising demographic of young children who are acquiring and absorbing vocabulary from multiple languages before they even start primary school.
In 2021 there were around 6 million people with non-British nationality living in the UK, with 9.6m people born abroad – 35% of whom live in London. In the social sciences, this relatively new landscape of such diverse national origins is often referred to as “superdiversity” – a term coined by the German anthropologist Professor Steven Vertovec. The UK’s superdiversity is reflected in our school system, with around 20% of pupils speaking English as an additional language. In London schools, more than 300 different languages are spoken. 

This intimate moment speaks to a broader truth: if we cultivate a system where language diversity is celebrated, people can be more fully themselves. In global Britain, surely this is something to strive for.

Britain’s multilingual children: ‘We speak whatever language gets the job done’ | Language | The Guardian

For more of an academic understanding:

About superdiversity - University of Birmingham

Superdiversity - Wikipedia

But it's not just academics who are interested:

Britain, a diverse country for decades, is now superdiverse | The Economist

And it's also of interest to other countries, such as Germany:

Superdiversity – Why It Is Not Just About Origin - TwentyThirty.

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